Index tab



Feb. 5, 1929. A 1,700,821 G. H. DAwsoN INDEX TAB Filed July 26, 1926vergeZa w 021/ Patented Feb. 5, i229.

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GEORGE H. DLAVSON, OF'BOSTON, MASSACHUSETTS, ASSIGNOR TO SERVICE BUREAU,

rnc., or cameraman, MASSACHUSETTS,

A CORPORATION OF MASSACHUSETTS. i

INDEXv TAB.

Applcaton'iled July 26, 19,26. Serial No. 124,886.

duce a tab of transparent sheet material having an outer reinforcingstrip, the transparent portion of the `tab providing a `window onopposite sides ofthe card and the metal strip providing increasedrigidity at aV position which will not increase the bulli ofthe indexsystem, and in general to provide an improved tab which is economicaland easy to manufacture and is durable, moisture proof andwear-resisting in use.

Preferred vembodiments of the invention are illustrated in theaccompanying drawings, in which Fig. 1 is a front elevation of a cardhaving the improved tab;

Fig. 2 is a rear view of Fig. 1 showing the manner of `inserting a labelwithin the tab;

Fig. 3 is a fragmentary elevation showing an optional construction of acard prior to the attachment of a modified type of tab; and

Fig. 4 is an enlarged vertical section on the line 1 -1 of Fig. 1.

The card body 5 may be made of any preferred sheet of material, such asheavy paper, cardboard or libreboard, and has at its uppei margin a pairof integral, spacedapart tongues 6 projecting at right angles thereto.The opposed inner edges of the tongues are preferably extended into thecard body to define the margins of a rela-` tively deep recess having ahorizontal bottoni edge 8; but, as indica-ted in the optionalconstruction shown in Fig. 3, the recess provided by the tongues mayextend only to ythe normal upper margin of the card.V In

either case the recess provides, in combination with'tlie tab elementsto be described, a pocket for a label or index slip 9, the pocketillustrated in Figs. 1, 2 and 4 permitting insertion of a larger labelthan in the construction shown in Fig. 3.

A pair of similar cover elements 10 and 11 of transparent sheetCelluloid, either separate or integrally connected, are adhesivelysecured, by cement or other suitable fastening means, upon the front andrear surfaces. res oectivelv of .card 5 coverino' the .is i 1. .c facesof the tongues 6 and extending downwardlv ovei' the card body. The outeredges of the Celluloid sheets register with the outer shoulders of thecard tongues so that the' tongues and Celluloid tab afford mutualstrength and protection to one another.y One of said sheets, for examplerear sheet 1l,.is slit at 12, adjacent the bottom edge 8 of the cardrecess to permit the insertion of label 9 in the manner shownin Fig. 2.Slitl 12A may be widened intermediate its-ends to form opposed recesses13 and ,14, andthe card body may have a recess 1 5 corresponding to therecess 14, to permitthe insertion of a finger'. for the purpose of morereadily grasping and withdrawing the label.

A reinforcing flange or bridge 16, consisting of a relatively narrowfolded strip of Vmetal or other suitable material is attached over theupper margin of the Celluloid sheets, the ends of the strip beingsecured to the tab as by rivets 17 passing through these'sheets andthrough tongues 6. In order that the upper edge of the tab may present asmooth surface, it is preferred that the length of the flange 1G berestricted at the fold so that the ends of the fold line will fit withinopposed notches 18 provided at the respective tongue tips.

As thus enclosed by the Celluloid sheets and reinforcing flange, therecess between the card tongues furnishes an unusually largelabel-receiving pocket, which is both dirt and'moisture proof and whichpermits visibilityof the label from either side of the index card.

Such construction permits the'guide card to be used in differentlocations in the filing system by reversing the card so that the tab mayappear yeither at the left or right hand side of the file drawer. Forexample, it may be preferred to locate the tab on each succeeding guidecard in five different positions, respectively, each successive tabbeing offset to the right or left of the preceding y UJI ufacturing aset of guide cards for a filing system of the aforesaid type. c

If it is preferred however, that but one side of the label be visible,it is obvious that either the pertorate or imperilorate cover sheet maybe made of opaque material, or that a paper lining may be insertedbetween one of the cover sheets and the card surface to obscure theindicia on either side thereof, as desirable. Additional changes instructural details may also be incerporated. in an index lcard or tabWithout departing from the spirit of the invention as defined in theappended claims.

An index device constructed in accordance with this invention provides adurable and handy tab having a rigidly reinforced outer edge which doesnot increase the bulk of the tiling system in which the card may beutilized. Since the amount oi' metal necessary for the reinforcingflange is relatively small, the tabA may be economicaliy constructedWit-hout sacrifice of strength and serviceability in use.

I claim: Y

l. An index comprising Va card provided with upstanding tongues forminga labelreceiving recess between them, cover sheets of non-metallicmaterial secured to opposite surfaces of the card over said recess, anda channeled bridge piece attached tothe ends of the tongues andvspanning the recess, one of said cove-r sheets having a slit to permitthe insertion of a label into said recess, and one of the cover sheetshaving a vvindovv per iitting visibility of the label.

2. An index comprising a card provided With upstanding tongues delininga recess open at the top between their inner edges and having outershoulders, cover sheets of transparent material -secured to oppositesurfaces of the card over said recess, and a metal flange Vfolded overthe upper edge of said cover sheets and said tongues to provide alabel-receiving' pocket Within said recess, said flange 'terminating atthe outer shoulders of the respective tongues and the ents of the flangebeing 4fastened to the ends oic the tongues, one of said cover sheetshaving a horizontal slit at the bottom of said pocket to perinit theinsertion of a label therein, so that the upper edge of the label may bereceived Within the folded flange.

Signed by me at Cambridge, Massachusetts, this 21st day of July, 1926.

' GERGE H. DAWSON.

